Device for inserting necks in box bodies



J. SCHMIEDEL DEVICE FOR INSERTING NECKS IN BOX BODIES Nqv. 5, 1940. 2

Filed Feb. 25, 1959 m m 2. V

Patented Nov. 5, 1940 UNITED STATES PATENT OFFICE nsvica FOB msan'rmo NECKS IN BOX nomss Mueller & Co.

Application February 25, 1939, Serial No. 258,431 In Germany February 28, 1938 This invention relates to a device for inserting necks in box bodies. Itisknowntoinsertaneckinaboxbodyby introducing a box body in a neck inserting device and then inserting a neck from above by means of a piston which presses the neck on all four sides against the inner wall of the body. To prevent troubles during insertion of a-neck and to insure the smooth introduction thereof into the body of a box the known devices employ fingers or feelers which during the inserting step move between the inner wall of the body and the neck or piston.

In one of the known devices the necks are inv1! serted during the forward motion of the box its object to provide fora relatively large output.

:0 According to the invention, operating speed is increased by omitting any reciprocating moti'on of pistons while permitting intermittenthnd continuous operation. For -this-"biirpose, the neck strip lying at first flata'fter having been glued 5 and opened-out into are'ctangular form is caught at its front boundary line- ;by tongs; bent inward- 1y on that side andconveyed to the inserting station. Then the other lthree sides of theneck strip are engaged by control means and also bent go inwardly, whereupon the control means place the strip in properpcsition relative to the box body and then tilt iti-into -the plane of the box so that the neck enters the-body of the box.

The tongs engaging the necks may move in a as closed path in such manner that the necks are gripped from above, the i; conveyed and thereupon released again, whereupon the tones retin-n to initial position. The path of motion of the tongs selves around two adjacent corners and besides a swinging-in motion carry out a tilting motion into a plane of the box. Before being caught by the pressure members, i. e., while they are still being brought into the introducing station by the 5 tongs, the necks with their top edges enter under guide surfaces which are laterally disposed and cooperate in the tilting motion carried out by the pressure members during the inserting step. The swinging motion of the pressure members and the tilting motion of the members and guide sur- 5 faces are brought about by separate drives, the tilting motion being performed about an axis lying in the height of the upper front edge of the box.

The invention is illustrated by way of exam- 1o pie in the accompanying drawing, in which Figure l is a side view of the device and shows a position at which the tongs have just conveyed a neck up to the inserting place;

Fig. 2 is a side view showing the position at 18 which the tongs have released the neck; and

Fig. 3 is a top view of the device in. general.

The neck strips l are in known manner in folded condition moved between and past the gluing means 2 and provided with glue somemy what below the center of their width. They are then conveyed within range of a suction plate l8 and of two levers 3, l which by turning it 90 fold out the neck strip to form a closed rectangle as shown in Fig. 3.

The bodies are moved in known manner by a chain type or other conveyor 5 provided with drivers '8 in the direction of the arrow 0, Fig. 2. The conveying path for the bodies 1 ascends near the inserting station so that the paths for the go I necks l and bodies 1 are approaching one another. When thewboxes are within the inserting station, one or more stops 8 enter their path to straighten the boxes which thus are in a position ready to receive the necks i on reaching the station.

The necks l are also conveyedrin the direction of the arrow'a by the tongs 8 which for instance carry out the closed advance motion 1) shown in Figs. 1 and 2. The tongs engage the 0 front side of a neck I. The jaws of the tongs 9 are bent toward the inside of the neck or curved, as indicated in Fig. 3. The inwardly disposed Jaw l0 extends over the entire height of the neck while the outer jaw II grips the neck only above the glue lines.

Having the rectangular form, the necks i are caught by the tongs 9 at the front side when the tongs are in extreme left-hand position and have moved down. The tongs then move to the right and engage the neck I. Within the inserting place guide surfaces I! are provided under which moves the upper edge of the neck i. Furthermore, near the end of the conveying way of the neck securing means having the form of strippers 22 are disposed for retaining the neck released by the tongs 9, II and serve later on as guide rails for the bodies having received their necks.

Within the inserting place pressure members of angular shape are, moreover, provided which are designated I4 and rotate about the shafts I3. Their actual pressure applying portions of acuteangled form embrace the outer circumference of the neck I and bend it inwardly also on the other three sides, as shown in Fig. 3.

The pressure members I 4 are swung in and out by being moved about the pivots I3. The toggle levers I5 carrying the members I4 are actuated at their free ends by control rods I6. I!

is the joint control shaft for the rods I6. Between the drive I1 and the control rods I6 universal joints I9 are interposed.

'Besides carrying out a rotary motion about the pivots I3 the pressure members I4, together with the guide faces I2, perform also a tilting motion from the plane of the conveying path of the necks I into the plane of the box bodies I for the purpose of inserting the necks in the bodies.

Tilting is effected about a shaft 20 by means of a drive. 2|, the tilting axis120 lying in the height of the upper front edge of the body 1. The mode of operatiori is as follows: Having been moved past the gluing device 2 the necks I in closed condition pass within range of the opening means 3, 4 which open the necks to form a'rectangular form. Then the jaws I 0,

II of the tongs 9 grip the front side of the neck,

bend it to' the middle of the neck. During theirforward motion the jaws I0 and II take along the neck which in this way enter under the guide surfaces I2. Simultaneously with the neck I the box body I is advanced also so that both on arriving at the insertirig station are already partly engaged, the stop 8 imparting to the body I the proper position and supporting it. The rear end of the neck I is then engaged. by the pressure members I4 above the glue line, and the other three sides are thus bent inwardly. Then the 5 pressure members I4 and the guide faces I2 tilt about the axis 20 into a plane of the body 1, whereby the neck I is inserted. In the meantime, the tongs 9 have opened their jaws and return to initial position to get a fresh neck I.

an After insertion of the neck I in the body 1 the members I3, I4 move upwards and the pressure members I4 open to grip another neck.

I claim: 1. A device for insertingnecks of cardboard or 55 like material in box bodies in which the necks are inserted after the forward motion of the boxes, having conveyor means in two inclined planes approaching each other, comprising means for gluing a neck while lying at first flat and opened out into a rectangular form, tongs for catching the neck at its front side for bending the front side of the neck towards the middle of the opened neck, means for conveying the neck in this form to a finished body of the box to be inserted therein, control means for gripping the other three sides of the neck and bending them towards the middle of the neck, means for tilting the control means for entering the neck with its full circumference into the plane of the box, and means releasing the control means from the neck.

2. A device according to claim 1, in which the tongs gripping the frontside of the neck with their legs bent toward the inside of the neck carry out a closed path for gripping and conveying the neck, releasing the neck and then returning to initial position above the conveying paths of the necks lying above the conveying part for the box bodies. 3. A device according to claim. 1, in which the tongs with their inner leg embracethe neck over its full width and with their outer leg above the glue line.

4. A device according to claim 1, in which at the place where the neck is inserted in the box the neck when released by the tongs.

5. A device according to claim 1, in which the control-means forv gripping and bending the second, third and fourth side of the neck and introducing the neck consist of pressure members which embrace the two rear corners of the neck and which besides a swinging motion in the plane of the neck perform also a tilting motion into the plane of the box. v

6. A device according to claim'l, in which'on passing to the inserting station the necks enter with their upper edge under guide surfaces which cooperate in the tilting motion performedby the pressure members.

7. A device according to claim 1, in which the swinging motion of the pressure members and g body securing means are provided for retaining the tilting motion of the pressure members and guide faces are effected by separate drives.

8. A device according to claim 1, in which the .turning axis for the tilting motion of the pressure members and guide faces is located in the height of the upper front edge of the box.

JOHANNES SCHMIEDEL. 

